code: function invalidPropDef(propDesc, msg) {
  	return new common.X2UsageError(
  		'Property ' + propDesc.container.nestedPath + propDesc.name +
  			' of record type ' + String(propDesc.container.recordTypeName) +
  			' has invalid definition: ' + msg);
  }
docs: DBOs module specific
  [PropertyDescriptor]{@link module:x2node-records~PropertyDescriptor}
  extension.
  
  @mixin PropertyDescriptorWithDBOs
  @static
   
  Get invalid property definition error.
  
  @private
  @param {module:x2node-records~PropertyDescriptor} propDesc Property
  descriptor.
  @param {string} msg Error message.
  @returns {module:x2node-common.X2UsageError} Error to throw.