| searchExpression | Expression to evaluate. |
| args | Parameters passed to the expression to evaluate. |
| flags | Exeution Flags used to add to the flags specified in the expression being evaluated. |
| item | Push a new yielded item in the current evaluation frame. |
IDisposable Returns a new disposable Scope. When out this scope is disposed the newly created SearchExpressionContext will be removed from the frames.
Push a new SearchExpression with its arguments to be evaluated. This is useful if a user defined evaluator needs to generate a new Context of evaluation.