question: @ Nullable private static Help findHelp ( @ NotNull final PsiElement element ) { if ( ! ( element instanceof CommandLinePart ) ) { return null ; } final CommandLinePart commandLinePart = ( CommandLinePart ) element ; final Command realCommand = commandLinePart . findRealCommand ( ) ; if ( realCommand == null ) { return null ; } final CommandLineElement commandLineElement = PyUtil . as ( element , CommandLineElement . class ) ; if ( commandLineElement == null ) { return null ; } final MyCommandHelpObtainer helpObtainer = new MyCommandHelpObtainer ( ) ; commandLineElement . accept ( helpObtainer ) ; return helpObtainer . myResultHelp ; }
target:  Searches for help text for certain element