function isPropertySet ($fieldName)
  {
    return isset($this->props->$fieldName)
      ? $this->props->$fieldName !== ''
      : $this->isBound ($fieldName);
  }
function isPropertySet ($fieldName)
  {
    return isset($this->props->$fieldName)
      ? $this->props->$fieldName !== ''
      : $this->isBound ($fieldName);
  }
function isPropertySet ( $ fieldName ) { return isset ( $ this -> props -> $ fieldName ) ? $ this -> props -> $ fieldName !== '' : $ this -> isBound ( $ fieldName ) ; }
Indicates if either a non-empty constant value or a databinding expression were specified for the given property.

@param string $fieldName
@return boolean
Indicates if either a non - empty constant value or a databinding expression were specified for the given property .