code: public AuditLogPaginationAction user(User user)
      {
          return user(user == null ? null : user.getId());
      }
docs: Filters retrieved entities by the specified {@link net.dv8tion.jda.core.entities.User User}.
  <br>This specified the action issuer and not the target of an action. (Targets need not be users)
  
  @param  user
  {@link net.dv8tion.jda.core.entities.User User} used to filter,
  or {@code null} to remove user filtering
  
  @return The current AuditLogPaginationAction for chaining convenience