Simple no-pojo methods for Position of a method (in truth we could use this anywhere). Simpler string and int does not require using ISourcePosition, which is nicer for the
getFile() · also: get_fileGet the filename for the method.
Returns: the filename for the method
getLine() · also: get_lineGet the line number for the method. 0-based (ie. line 1 returns a 0)
Returns: the line number for the method