concrete/src/Form/Service/Validation.php
public function addRequiredEmail($field, $errorMsg = null)
    {
        $this->addRequired($field, $errorMsg, self::VALID_EMAIL);
    }
public function addRequiredEmail($field, $errorMsg = null)
    {
        $this->addRequired($field, $errorMsg, self::VALID_EMAIL);
    }
public function addRequiredEmail ( $ field , $ errorMsg = null ) { $ this -> addRequired ( $ field , $ errorMsg , self :: VALID_EMAIL ) ; }
Adds a required email address to the suite of tests to be run.

@param string $field
@param string $errorMsg
Adds a required email address to the suite of tests to be run .