code: function checkKeys4AllDetails(mMap, mAllowedKeys2Type) {
  		var sName;
  
  		for (sName in mMap) {
  			checkKeys(mMap[sName], mAllowedKeys2Type, sName);
  		}
  	}
docs: /*
  Checks that all details objects in the given map have only allowed keys.
  
  @param {object} mMap
  Map from name to details object (for a groupable or aggregatable property)
  @param {string[]} [mAllowedKeys2Type]
  Maps keys which are allowed for the details objects to the expected type name
  @throws {Error}
  In case an unsupported key is found