public SystemInputDefBuilder functions( Stream<FunctionInputDef> functions)
    {
    functions.forEach( function -> systemInputDef_.addFunctionInputDef( function));
    return this;
    }
public SystemInputDefBuilder functions ( Stream < FunctionInputDef > functions ) { functions . forEach ( function -> systemInputDef_ . addFunctionInputDef ( function ) ) ; return this ; }
Adds system functions.