code: function TextLayerBuilder_render(timeout) {
        if (!this.divContentDone || this.renderingDone) {
          return;
        }
  
        if (this.renderTimer) {
          clearTimeout(this.renderTimer);
          this.renderTimer = null;
        }
  
        if (!timeout) { // Render right away
          this.renderLayer();
        } else { // Schedule
          var self = this;
          this.renderTimer = setTimeout(function() {
            self.renderLayer();
            self.renderTimer = null;
          }, timeout);
        }
      }
docs: Renders the text layer.
  @param {number} timeout (optional) if specified, the rendering waits
  for specified amount of ms.