lib/collection/header.js
function (obj) {
        return Boolean(obj) && ((obj instanceof Header) ||
            _.inSuperChain(obj.constructor, '_postman_propertyName', Header._postman_propertyName));
    }
function (obj) {
        return Boolean(obj) && ((obj instanceof Header) ||
            _.inSuperChain(obj.constructor, '_postman_propertyName', Header._postman_propertyName));
    }
function ( obj ) { return Boolean ( obj ) && ( ( obj instanceof Header ) || _ . inSuperChain ( obj . constructor , '_postman_propertyName' , Header . _postman_propertyName ) ) ; }
Check whether an object is an instance of PostmanHeader.

@param {*} obj
@returns {Boolean}
Check whether an object is an instance of PostmanHeader .