apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/entity/vo/NamespaceRolesAssignedUsers.java/NamespaceRolesAssignedUsers/getReleaseRoleUsers
class NamespaceRolesAssignedUsers:  public Set<UserInfo> getReleaseRoleUsers() {
    return releaseRoleUsers;
  }