Module 21 Regarding String Return Type in Keyword functions

Hi Ashish,

what is the significance of String Return type in keyword function in module 21 video.

where are we using it?

please let me know

for example:

public String clearTextField(String objectKey){
log("Starting function clearTextField"+ objectKey);
element(objectKey).clear();
log("Ending function clearTextField with status "+Constants.PASS);
return Constants.PASS;
}