code: function gossiperBroadcast( sKey, vValue, pfnCallback )
  {
  	if ( ! DeUtilsCore.isExistingString( sKey ) )
  	{
  		return pfnCallback( `GOSSIPER ))) call gossiperBroadcast with invalid sKey: ${ JSON.stringify( sKey ) }` );
  	}
  
  	/**
  	 * 	update local value and broadcast it to all connected peers
  	 */
  	_oGossiper.setLocalValue( sKey, vValue, err =>
  	{
  		if ( err )
  		{
  			return pfnCallback( err );
  		}
  
  		pfnCallback( null );
  	});
  }
docs: broadcast
  
  @param	{string}	sKey
  @param	{}		vValue
  @param	{function}	pfnCallback( err )
  @return {*}