in lambda-packages/role_handler/index.js [151:157]
const generateRoleName = exports.generateRoleName = function (logicalResourceId) {
let roleName = logicalResourceId.substr(0, maxTruncatedRoleNameLen) + '-';
for (let i = 0; i < randomSuffixLen; i++) {
roleName = roleName + suffixChars[Math.floor(Math.random() * suffixChars.length)];
}
return roleName;
};