exists() Operation() Operation

Syntax	NONE `aVariable.exists()`
Semantics	Returns true if `aVariable` is not null, otherwise false. See chapter NULL Values to read more about null values.
Substitutables	`aVariable`	Can be a variable or an attribute of an object.
Examples	NONE `set b1 = x.exists(); set b2 = myObject.myAttr.exists();` Assigns the boolean return value of operation `exists()` to variable b2. Returns true if the attribute `myAttr` of object `myObject` is not null.

Example File (Builder project E2E Action Language/BaseTypes):

<your example path>\E2E Action Language\BaseTypes\uml\boolean.xml