This property can be used to set and retrieve the name of the hosting application property.
The hosting app, along with the HostOS property and ViewportSize, determines which baseline will be used as the basis for comparing checkpoint images. By default, the hosting app is undefined. The Test manager displays this value as the Browser column.
config.host_app = configval # type is Text configval = config.host_app
The value to be used for the Host App property.