mediaBlockRenderer(block) {
   if (block.getType() !== "atomic") {
     return null;
   }

   const type = block.getData().toObject().type;

   let plugin = this.pluginsByType[type] || this.handleBlockNotFound(block);
   if (!plugin) {
     return null;
   }

   return {
     component: Media,
     editable: false,
     props: {
       plugin: plugin,
       onChange: this.onChange,
       editorState: this.props.editorState,
       setReadOnly: this.setReadOnly
     }
   };
 }