Use this method to set the name of the hosting operating system property.
The HostOS, along with the hosting app and viewport size, determines which baseline will be used as the basis for comparing checkpoint images. By default, the hosting OS is undefined. The Test manager displays this value as the OS column.
- The value to be used for the Host OS Property.
The value returned is the object that called the method.
This allows you to use a fluent style to call the
setXXXXmethods of this class.