# apply

This function is used to call a function, altstep or testcase referenced by a behavior type variable.

Related keyword:

- type

### behavior_type_variable.apply( arguments )

- The behavior_type_variable denotes a behavior type variable that refers to a function, altstep or testcase.

- The arguments denotes the argument list of the function, see function.

- Details and examples can be found under behavior_type.