The suite's type.
Must be one of the following values:
BUILTIN_FUZZ
APPIUM_JAVA_JUNIT
APPIUM_JAVA_TESTNG
APPIUM_PYTHON
APPIUM_NODE
APPIUM_RUBY
APPIUM_WEB_JAVA_JUNIT
APPIUM_WEB_JAVA_TESTNG
APPIUM_WEB_PYTHON
APPIUM_WEB_NODE
APPIUM_WEB_RUBY
INSTRUMENTATION
XCTEST
XCTEST_UI