code: function(contentType, contentTypes) {
  			for (var i=0; i < contentTypes.length; i++) {
  				if (this.isExtensionOf(contentType, contentTypes[i])) {
  					return true;
  				}
  			}
  			return false;
  		}
docs: Similar to {@link #isExtensionOf}, but works on an array of contentTypes.
  @param {orion.core.ContentType|String} contentType ContentType or ContentType ID.
  @param {orion.core.ContentType[]|String[]} contentTypes Array of ContentTypes or ContentType IDs.
  @returns {Boolean} <code>true</code> if <code>contentType</code> equals or descends from any of the
  ContentTypes in <code>contentTypes</code>.