nl_tokens: The returned Promise is resolved with null if another showPanel () gets called while this . panel ( panelName ) Promise is in flight .
pl_tokens: function ( panelName ) { if ( this . _currentPanelLocked ) { if ( this . _currentPanel !== this . _panels [ panelName ] ) return Promise . reject ( new Error ( "Current panel locked" ) ) ; return Promise . resolve ( this . _currentPanel ) ; } this . _panelForShowPromise = this . panel ( panelName ) ; return this . _panelForShowPromise . then ( setCurrentPanelIfNecessary . <mask> ( this , this . _panelForShowPromise ) ) ; /**
           * @param {!Promise.<!WebInspector.Panel>} panelPromise
           * @param {!WebInspector.Panel} panel
           * @return {?WebInspector.Panel}
           * @this {WebInspector.InspectorView}
           */ function setCurrentPanelIfNecessary ( panelPromise , panel ) { if ( this . _panelForShowPromise !== panelPromise ) return null ; this . setCurrentPanel ( panel ) ; return panel ; } }