public static string RuleMethodStartToString( string expectedName, Variable[] expectedVariables, string ag, string sg, string eg )
{
return "<%rule " + expectedName + "( " +
(expectedVariables.Length > 0
? expectedVariables
.Select( variable => VariableUnitTest.VariableToString( variable, ag, sg, eg ) )
.Aggregate( ( s1, s2 ) => s1 + ag + s2 )
: "")
+ " )%>";
}