public function addInterface($interface) {
		if ($interface instanceof PhpInterface) {
			$name = $interface->getName();
			$qname = $interface->getQualifiedName();
			$namespace = $interface->getNamespace();

			if ($namespace != $this->getNamespace()) {
				$this->addUseStatement($qname);
			}
		} else {
			$name = $interface;
		}

		$this->interfaces->add($name);

		return $this;
	}
public function addInterface($interface) {
		if ($interface instanceof PhpInterface) {
			$name = $interface->getName();
			$qname = $interface->getQualifiedName();
			$namespace = $interface->getNamespace();

			if ($namespace != $this->getNamespace()) {
				$this->addUseStatement($qname);
			}
		} else {
			$name = $interface;
		}

		$this->interfaces->add($name);

		return $this;
	}
public function addInterface ( $ interface ) { if ( $ interface instanceof PhpInterface ) { $ name = $ interface -> getName ( ) ; $ qname = $ interface -> getQualifiedName ( ) ; $ namespace = $ interface -> getNamespace ( ) ; if ( $ namespace != $ this -> getNamespace ( ) ) { $ this -> addUseStatement ( $ qname ) ; } } else { $ name = $ interface ; } $ this -> interfaces -> add ( $ name ) ; return $ this ; }
Adds an interface.

If the interface is passed as PhpInterface object,
the interface is also added as use statement.

@param PhpInterface|string $interface interface or qualified name
@return $this
Adds an interface .