public VariableBindingScope(BindingScope containingScope, VariableDeclarationStatementSyntax variableDeclaration)
 {
     ContainingScope = containingScope;
     VariableBinding = new VariableBinding(variableDeclaration);
     ContainingScope.AddShadowingBinding(VariableBinding);
 }
 public VariableBindingScope(BindingScope containingScope, ParameterSyntax parameter)
 {
     ContainingScope = containingScope;
     VariableBinding = new VariableBinding(parameter);
     ContainingScope.AddShadowingBinding(VariableBinding);
 }