Activity › Forums › Salesforce® Discussions › What is the Use of setHeader in Mock Class in Salesforce? Salesforce® Discussions What is the Use of setHeader in Mock Class in Salesforce? Posted by Marziya on May 13, 2020 at 1:28 PM What is the Use of setHeader in Mock Class in Salesforce? MOHIT replied 6 years ago 2 Members · 1 Reply 1 Reply MOHIT Member May 13, 2020 at 2:57 PM This reply was modified 6 years ago by MOHIT. Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me