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2px}devsite-book-nav .devsite-nav-heading.devsite-nav-divider:first-child{padding-top:4px}devsite-book-nav .devsite-nav-divider>.devsite-nav-title{font:500 11px/16px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif;letter-spacing:0.8px;text-transform:uppercase}devsite-book-nav .devsite-nav-accordion+.devsite-nav-accordion,devsite-book-nav .devsite-nav-divider+.devsite-nav-accordion{border-top:0;padding-top:12px}devsite-book-nav .devsite-nav-accordion+.devsite-nav-divider{border-top:0;padding-top:4px}devsite-book-nav .devsite-nav-accordion+.devsite-nav-item:not(.devsite-nav-accordion):not(.devsite-nav-divider),devsite-book-nav .devsite-nav-divider+.devsite-nav-item:not(.devsite-nav-accordion):not(.devsite-nav-divider),devsite-book-nav .devsite-nav-item:not(.devsite-nav-accordion):not(.devsite-nav-divider)+.devsite-nav-accordion,devsite-book-nav 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1);transition:transform .2s cubic-bezier(0.4, 0, 0.2, 1), -webkit-transform .2s cubic-bezier(0.4, 0, 0.2, 1);z-index:1013}[dir=rtl] devsite-book-nav{-webkit-transform:translate3d(280px, 0, 0) !important;transform:translate3d(280px, 0, 0) !important}devsite-book-nav:not([animatable]){-webkit-transition:-webkit-transform 1ms;transition:-webkit-transform 1ms;transition:transform 1ms;transition:transform 1ms, -webkit-transform 1ms}body[ready] .devsite-book-nav-bg[fixed]{display:none}body[ready] devsite-book-nav[fixed]{background:#fff;display:block !important;-webkit-box-shadow:0 1px 2px 0 rgba(60,64,67,.3),0 2px 6px 2px rgba(60,64,67,.15);box-shadow:0 1px 2px 0 rgba(60,64,67,.3),0 2px 6px 2px rgba(60,64,67,.15)}devsite-book-nav[visually-hidden]{opacity:1 !important;pointer-events:auto !important;visibility:visible !important}#devsite-hamburger-menu{display:inline-block}devsite-book-nav #devsite-close-nav{color:#5f6368;-ms-flex-negative:0;flex-shrink:0}#devsite-hamburger-menu,devsite-book-nav #devsite-close-nav{height:auto;padding:8px;position:relative;width:auto;z-index:20}[dir=ltr] #devsite-hamburger-menu,[dir=ltr] devsite-book-nav #devsite-close-nav{margin:0 8px 0 -4px}[dir=rtl] #devsite-hamburger-menu,[dir=rtl] devsite-book-nav #devsite-close-nav{margin:0 -4px 0 8px}devsite-book-nav .devsite-mobile-nav-top{display:block}devsite-book-nav .devsite-book-nav-wrapper{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-transform:translate3d(-268px, 0, 0) !important;transform:translate3d(-268px, 0, 0) !important;-webkit-transition:-webkit-transform .2s cubic-bezier(0.4, 0, 0.2, 1);transition:-webkit-transform .2s cubic-bezier(0.4, 0, 0.2, 1);transition:transform .2s cubic-bezier(0.4, 0, 0.2, 1);transition:transform .2s cubic-bezier(0.4, 0, 0.2, 1), -webkit-transform .2s cubic-bezier(0.4, 0, 0.2, 1)}[dir=rtl] devsite-book-nav 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.devsite-nav-responsive-tabs>.devsite-nav-item:last-child{margin-bottom:8px}}@media screen and (max-width: 600px){#devsite-hamburger-menu,devsite-book-nav #devsite-close-nav{margin:0 4px 0 -12px}}devsite-book-nav .devsite-product-id-row{-webkit-box-align:center;-ms-flex-align:center;align-items:center;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;min-height:56px;padding:18px 24px 2px}devsite-book-nav .devsite-header-no-lower-tabs .devsite-product-id-row{min-height:72px;padding:18px 24px}devsite-book-nav .devsite-product-description-row{font:400 20px/32px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif}devsite-book-nav .devsite-breadcrumb-list+.devsite-product-description:not(:empty){margin-top:16px}devsite-book-nav .devsite-product-description{font:16px/24px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans 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.devsite-google-wordmark-svg-path{-webkit-transition:fill .2s;transition:fill .2s}devsite-header .devsite-site-logo-link canvas{height:auto !important}devsite-header .devsite-product-logo-container{-webkit-box-align:center;-ms-flex-align:center;align-items:center;border-radius:50%;display:-webkit-box;display:-ms-flexbox;display:flex;height:36px;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;width:36px}[dir=ltr] devsite-header .devsite-product-logo-container{margin-right:4px}[dir=rtl] devsite-header .devsite-product-logo-container{margin-left:4px}devsite-header .devsite-product-logo{font-size:32px;height:32px;max-width:32px;min-width:32px;overflow:hidden;white-space:nowrap}devsite-header .devsite-product-logo-container[background] .devsite-product-logo{font-size:28px;height:28px;max-width:28px;min-width:28px}devsite-header .devsite-product-name{font:400 20px/32px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans 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.2s;transition:transform .2s;transition:transform .2s, -webkit-transform .2s}@media screen and (max-width: 840px){devsite-header[search-active] .devsite-product-name-wrapper,devsite-header[search-active] devsite-language-selector,devsite-header[search-active] devsite-user{display:none}devsite-header[search-active] devsite-search{-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1;-webkit-transform:none !important;transform:none !important}devsite-header[search-active] .devsite-header-upper-tabs{-webkit-box-flex:0;-ms-flex:0 1;flex:0 1;overflow:hidden}devsite-header[search-active] .devsite-top-logo-row devsite-search{margin:6px 0}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-searchbox{width:100%}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-searchbox .devsite-search-image{display:-webkit-box;display:-ms-flexbox;display:flex}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-popout,devsite-header .devsite-top-logo-row devsite-search .devsite-searchbox::before{left:-60px;width:calc(100vw + 16px)}[dir=rtl] devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-popout,[dir=rtl] devsite-header .devsite-top-logo-row devsite-search .devsite-searchbox::before{left:auto;right:-60px}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-search-button{margin:0 0 0 16px}[dir=rtl] devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-search-button{margin:0 16px 0 0}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-search-button[search-open]{display:none}devsite-header .devsite-top-logo-row devsite-search[search-active] .devsite-search-button[search-close]{display:-webkit-box;display:-ms-flexbox;display:flex}devsite-header *[transition]{-webkit-transition:none;transition:none}}devsite-header devsite-search-background{-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-sizing:content-box;box-sizing:content-box;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:stretch;-ms-flex-pack:stretch;justify-content:stretch;margin:0 0 0 24px;padding:6px 0;pointer-events:none;position:absolute;right:0;-webkit-transform-origin:right center;transform-origin:right center;-webkit-transition:-webkit-transform .2s;transition:-webkit-transform .2s;transition:transform .2s;transition:transform .2s, -webkit-transform .2s;will-change:transition;z-index:9}[dir=rtl] devsite-header devsite-search-background{left:0;margin:0 24px 0 0;right:auto;-webkit-transform-origin:left center;transform-origin:left center}devsite-header devsite-search-background::after{background:#f1f3f4;content:"";-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1;height:100%;-webkit-transition:background .2s;transition:background .2s}devsite-header[billboard] .devsite-top-logo-row devsite-search .devsite-search-form{opacity:1;-webkit-transition:opacity .2s,-webkit-transform .2s;transition:opacity .2s,-webkit-transform .2s;transition:opacity .2s,transform .2s;transition:opacity .2s,transform .2s,-webkit-transform .2s}devsite-header[billboard][bottom-row--hidden] .devsite-top-logo-row devsite-search .devsite-search-form{-webkit-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0)}devsite-header[billboard]:not([bottom-row--hidden]) .devsite-top-logo-row devsite-search .devsite-search-form,body[type=error] devsite-header .devsite-top-logo-row .devsite-search-form{opacity:0;-webkit-transform:translate3d(200px, 0, 0);transform:translate3d(200px, 0, 0)}devsite-header[billboard][bottom-row--hidden] .devsite-header-billboard-search devsite-search{opacity:0}devsite-header[billboard] .devsite-header-billboard-search devsite-search{margin-left:0}[dir=rtl] devsite-header[billboard] .devsite-header-billboard-search devsite-search{margin-right:0}devsite-header[billboard] .devsite-header-billboard-search devsite-search .devsite-popout{max-height:calc(100vh - 255px)}@media screen and (max-width: 840px){devsite-header .devsite-top-logo-row devsite-search{width:auto}devsite-header .devsite-top-logo-row devsite-search .devsite-searchbox{width:0}devsite-header .devsite-top-logo-row devsite-search .devsite-searchbox .devsite-search-image{display:none}devsite-header .devsite-top-logo-row devsite-search .devsite-search-button{-webkit-box-align:center;-ms-flex-align:center;align-items:center;color:#5f6368;display:-webkit-box;display:-ms-flexbox;display:flex;z-index:1}devsite-header .devsite-top-logo-row devsite-search .devsite-search-button[search-open]{display:-webkit-box;display:-ms-flexbox;display:flex}devsite-header .devsite-top-logo-row devsite-search .devsite-search-button[search-close]{display:none}devsite-header .devsite-top-logo-row devsite-search 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48px;position:relative;z-index:8}[dir=rtl] devsite-header .devsite-header-upper-tabs{margin:0 48px 0 0}devsite-header devsite-tabs tab a:hover,devsite-header devsite-tabs tab a:focus{text-decoration:none}@media screen and (max-width: 840px){devsite-header .devsite-header-upper-tabs{margin-left:0}[dir=rtl] devsite-header .devsite-header-upper-tabs{margin-right:0}devsite-header devsite-tabs.upper-tabs{display:none}}

devsite-language-selector>devsite-select .devsite-select-toggle{color:#3c4043;max-width:124px;padding:0 31px 0 15px}

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devsite-tabs{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1;height:48px;max-width:calc(100% - 208px);position:relative}devsite-tabs[connected]{max-width:none}devsite-tabs .devsite-tabs-wrapper{bottom:0;display:-webkit-box;display:-ms-flexbox;display:flex;left:0;overflow:hidden;position:absolute;right:0;top:0}devsite-tabs[no-overflow] .devsite-tabs-wrapper{overflow:auto}devsite-tabs[overflow-menu--open] .devsite-tabs-wrapper,devsite-tabs[dropdown--open] .devsite-tabs-wrapper{overflow:visible}devsite-tabs tab{display:-webkit-box;display:-ms-flexbox;display:flex;-ms-flex-negative:0;flex-shrink:0;position:relative}devsite-tabs tab>a{-webkit-box-align:center;-ms-flex-align:center;align-items:center;display:-webkit-box;display:-ms-flexbox;display:flex;font:500 14px/20px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif;margin:0;padding:0 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devsite-toc.devsite-toc{float:right;width:160px}[dir=rtl] devsite-toc.devsite-toc{float:left}devsite-toc>.devsite-nav-list{border-left:4px solid #5f6368;width:160px}[dir=rtl] devsite-toc>.devsite-nav-list{border-left:0;border-right:4px solid #5f6368}devsite-toc[fixed]>.devsite-nav-list{contain:content;overflow-x:hidden;overflow-y:auto;position:fixed;-webkit-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0);will-change:max-height,transform}[dir=ltr] devsite-toc[fixed]>.devsite-nav-list{padding-right:8px}[dir=rtl] devsite-toc[fixed]>.devsite-nav-list{padding-left:8px}devsite-toc>.devsite-nav-list>:first-child>.devsite-nav-title{padding-top:0}devsite-toc>.devsite-nav-list>:last-child>.devsite-nav-title:only-child,devsite-toc>.devsite-nav-list>:last-child>.devsite-nav-list>:last-child>.devsite-nav-title:last-child{padding-bottom:0}devsite-toc.devsite-toc-embedded{display:none}devsite-toc.devsite-toc-embedded>.devsite-nav-list{width:auto}devsite-toc .devsite-nav-list{padding:0 0 0 12px}[dir=rtl] devsite-toc .devsite-nav-list{padding:0 12px 0 0}devsite-toc .devsite-nav-more-items,devsite-toc .devsite-nav-show-all{display:none}devsite-toc[expandable] .devsite-nav-show-all,devsite-toc[expandable] .devsite-nav-more-items{color:#5f6368;display:block;height:24px;padding:0}devsite-toc .devsite-nav-show-all{margin:-4px 0 0 4px;min-width:20px}devsite-toc .devsite-nav-show-all::before{content:"expand_more"}devsite-toc .devsite-nav-more-items{margin-bottom:-8px;min-width:0}devsite-toc .devsite-nav-more-items::before{content:"more_horiz"}devsite-toc[expanded] .devsite-nav-show-all::before,devsite-toc[expanded] .devsite-nav-more-items::before{content:"expand_less"}devsite-toc .devsite-toc-toggle{display:-webkit-box;display:-ms-flexbox;display:flex;margin:0}devsite-toc .devsite-show-apix{margin-top:12px}@media screen and (max-width: 1252px){devsite-toc.devsite-toc,devsite-toc[visible].devsite-toc{display:none}devsite-toc.devsite-toc-embedded:not(:empty){display:block;margin:20px 0 24px}body[type=landing] devsite-toc.devsite-toc-embedded:not(:empty){margin:20px 40px 24px}}@media screen and (max-width: 840px){body[type=landing] devsite-toc.devsite-toc-embedded:not(:empty){margin:20px 24px 24px}}@media screen and (max-width: 600px){body[type=landing] devsite-toc.devsite-toc-embedded:not(:empty){margin:20px 16px 24px}}

devsite-user{display:block;-webkit-box-flex:0;-ms-flex:0 0 auto;flex:0 0 auto}devsite-user:not(:empty){margin:0 -8px 0 0}[dir=rtl] devsite-user:not(:empty){margin:0 0 0 -8px}devsite-user #devsite-signin-btn{-webkit-box-align:center;-ms-flex-align:center;align-items:center;display:-webkit-box;display:-ms-flexbox;display:flex;font:500 14px/36px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif}devsite-user .ogb-wrapper{display:-webkit-box;display:-ms-flexbox;display:flex;opacity:1;-webkit-transition:opacity .2s cubic-bezier(0.4, 0, 0.2, 1);transition:opacity .2s cubic-bezier(0.4, 0, 0.2, 1)}devsite-user .ogb-pending{opacity:0}devsite-user .ogb-si{margin:0 0 0 16px}[dir=rtl] devsite-user .ogb-si{margin:0 16px 0 0}devsite-user .ogb-so{margin:0 0 0 12px}[dir=rtl] devsite-user .ogb-so{margin:0 12px 0 0}@media(-webkit-min-device-pixel-ratio: 1.25),(min-resolution: 1.25dppx),not all{[dir=rtl] devsite-user .gb_xa::before{-webkit-transform-origin:right 0;transform-origin:right 0}}devsite-user .devsite-user-dialog{display:none}devsite-user .devsite-user-dialog a:link,devsite-user .devsite-user-dialog a:visited{color:#1a73e8;text-decoration:none}devsite-user[dialog--open] .devsite-user-dialog{background:#fff;border:1px solid rgba(0,0,0,.2);border-radius:2px;-webkit-box-shadow:0 2px 10px rgba(0,0,0,.2);box-shadow:0 2px 10px rgba(0,0,0,.2);color:#000;display:block;outline:none;overflow:hidden;position:absolute;right:24px;top:62px}[dir=rtl] devsite-user[dialog--open] .devsite-user-dialog{right:auto;left:24px}devsite-user .devsite-user-dialog-toggle,devsite-user .devsite-user-dialog-photo,devsite-user .devsite-user-dialog-toggle .devsite-user-dialog-letter{-webkit-box-align:center;-ms-flex-align:center;align-items:center;border-radius:50%;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;margin:0;overflow:hidden;padding:0}devsite-user .devsite-user-dialog-toggle{border:4px solid transparent;-webkit-box-sizing:content-box;box-sizing:content-box;height:32px;margin:0 4px 0 0;overflow:hidden;text-decoration:none;width:32px}[dir=rtl] devsite-user .devsite-user-dialog-toggle{margin:0 0 0 4px}devsite-user .devsite-user-dialog-toggle:focus{border-color:rgba(0,0,0,.2) !important}devsite-user .devsite-user-dialog-photo-thumbnail{height:32px;width:32px}devsite-user .devsite-user-dialog-toggle .devsite-user-dialog-letter{-webkit-box-flex:0;-ms-flex:0 0 32px;flex:0 0 32px;font-size:17px;height:32px}devsite-user .devsite-user-dialog-learn-more{background:#fef9db;font-size:11px;line-height:normal;padding:10px 20px;white-space:normal}devsite-user .devsite-user-dialog-user{display:-webkit-box;display:-ms-flexbox;display:flex;margin:20px;white-space:nowrap;width:calc(100% - 40px)}devsite-user .devsite-user-dialog-photo,devsite-user .devsite-user-dialog-photo-portrait{-webkit-box-flex:0;-ms-flex:0 0 96px;flex:0 0 96px;height:96px}devsite-user .devsite-user-dialog-letter{text-transform:uppercase}devsite-user .devsite-user-dialog-photo .devsite-user-dialog-letter{font-size:52px}devsite-user .devsite-user-dialog-details{font-size:13px;line-height:normal;margin:0 0 0 20px}[dir=rtl] devsite-user .devsite-user-dialog-details{margin:0 20px 0 0}devsite-user .devsite-user-dialog-name,devsite-user .devsite-user-dialog-email{text-overflow:ellipsis;overflow:hidden}devsite-user .devsite-user-dialog-name{font-weight:bold;margin:-4px 0 1px}devsite-user .devsite-user-dialog-email{color:#666}devsite-user .devsite-user-dialog-privacy-policy{margin:6px 0}devsite-user .devsite-user-dialog-about>a{background:#4d90fe;border:1px solid #3079ed;border-radius:2px;display:inline-block;font:13px/28px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif;font-weight:bold;margin:10px 0 0;padding:0 12px;white-space:nowrap}devsite-user .devsite-user-dialog-about>a:link,devsite-user .devsite-user-dialog-about>a:visited{color:#fff}devsite-user .devsite-user-dialog-buttons{background:#f5f5f5;border-top:1px solid rgba(0,0,0,.2);display:-webkit-box;display:-ms-flexbox;display:flex;padding:10px 20px}devsite-user .devsite-user-dialog-buttons>a{background:#f8f8f8;border:1px solid #c6c6c6;border-radius:2px;display:inline-block;font:13px/28px Roboto,Noto Sans,Noto Sans JP,Noto Sans KR,Noto Naskh Arabic,Noto Sans Thai,Noto Sans Hebrew,Noto Sans Bengali,sans-serif;padding:0 12px}devsite-user .devsite-user-dialog-buttons>a:link,devsite-user .devsite-user-dialog-buttons>a:visited{color:#666}devsite-user .devsite-user-dialog-buttons>a:last-child{margin:0 0 0 auto}[dir=rtl] devsite-user .devsite-user-dialog-buttons>a:last-child{margin:0 auto 0 0}@media screen and (max-width: 840px){devsite-user .ogb-si{margin:0 0 0 4px}[dir=rtl] devsite-user .ogb-si{margin:0 4px 0 0}}

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