add docstring and comment for viewExistsCheck message
add docstring and comment for viewExistsCheck message

mistermocha/jenkinsapi,domenkozar/jenkinsapi,domenkozar/jenkinsapi,salimfadhley/jenkinsapi,imsardine/jenkinsapi,zaro0508/jenkinsapi,aerickson/jenkinsapi,mistermocha/jenkinsapi,zaro0508/jenkinsapi,salimfadhley/jenkinsapi,jduan/jenkinsapi,zaro0508/jenkinsapi,imsardine/jenkinsapi,JohnLZeller/jenkinsapi,EwoutVDC/jenkinsapi,jduan/jenkinsapi,JohnLZeller/jenkinsapi,JohnLZeller/jenkinsapi,ramonvanalteren/jenkinsapi,mistermocha/jenkinsapi,imsardine/jenkinsapi,aerickson/jenkinsapi