Gets a value indicating whether the specified environment variable exists.

bool environment::variable-exists(name)

Parameters

Name	Type	Description
name	string	The environment variable that should be checked.

Return Value

true if the environment variable exists; otherwise, false.

Execute a set of tasks only if the "BUILD_DEBUG" environment variable is set.

    <if test="${environment::variable-exists('BUILD_DEBUG')}">
    ...
</if>