code: public static void verify(
        boolean expression,
        @Nullable String errorMessageTemplate,
        @Nullable Object @Nullable ... errorMessageArgs) {
      if (!expression) {
        throw new VerifyException(lenientFormat(errorMessageTemplate, errorMessageArgs));
      }
    }
docs: Ensures that {@code expression} is {@code true}, throwing a {@code VerifyException} with a
  custom message otherwise.
  
  @param expression a boolean expression
  @param errorMessageTemplate a template for the exception message should the check fail. The
  message is formed by replacing each {@code %s} placeholder in the template with an
  argument. These are matched by position - the first {@code %s} gets {@code
  errorMessageArgs[0]}, etc. Unmatched arguments will be appended to the formatted message in
  square braces. Unmatched placeholders will be left as-is.
  @param errorMessageArgs the arguments to be substituted into the message template. Arguments
  are converted to strings using {@link String#valueOf(Object)}.
  @throws VerifyException if {@code expression} is {@code false}
  @see Preconditions#checkState Preconditions.checkState()