private function getDefinition($env, $key)
	{
		return isset($this->definitions[$env][$key])
			? $this->definitions[$env][$key]
			: null;
	}
private function getDefinition($env, $key)
	{
		return isset($this->definitions[$env][$key])
			? $this->definitions[$env][$key]
			: null;
	}
private function getDefinition ( $ env , $ key ) { return isset ( $ this -> definitions [ $ env ] [ $ key ] ) ? $ this -> definitions [ $ env ] [ $ key ] : null ; }
Gets a property definition by key for a specific environment.

@param string $env Environment name.
@param string $key Key name.
@return array|null
Gets a property definition by key for a specific environment .