| Name | Description | |
|---|---|---|
  | FindReference | Searches for the specified reference type (Identifier or MethodName). |
| HasRefsToId | Checks if a given expression is Identifier with a given name or complex expression that contains Identifier with a given name. |
| IsFunc | Checks if given expression is function from a given list. |
| IsId | Checks if a given expression is Identifier with a given name. |
| IsNullOrEmpty | Сhecks whether the given expression is empty. |
| IsValid | Returns a value that indicates whether the given expression is valid. |
| Not | Returns the inverse of this expression. |
| Replace | Re-creates new expression tree with renamed identifier. |
| ReplaceIdentifier | Replaces all occurrences of the identifier in current expression, using provided function. |