* @return 指定されたキーの文字列。{@literal null}や空文字列であってはいけません
     * @see ResourceBundle#getString(String)
     */
    public static String getString(final ResourceBundle bundle, final String key) {
        assertArgumentNotNull("bundle", bundle);
        assertArgumentNotEmpty("key", key);

        try {
            return bundle.getString(key);
        } catch (final Throwable t) {
            return null;
        }
    }

        FieldUtil.set(field, this, testData);
        assertThat(FieldUtil.getString(field, this), is(testData));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetStringFieldObject() throws Exception {
        final Field field = getClass().getField("STRING_DATA");
        assertThat(FieldUtil.getString(field), is(STRING_DATA));
    }

    /**
     * @throws Exception
     */

            final String pattern = ResourceBundleUtil.getString(resourceBundle, key);
            if (pattern != null) {
                return pattern;
            }
        }
        return resourceBundle.getString(messageCode);
    }

    /**
     * システム名を返します。
     *
     * @param messageCode
     *            メッセージコード

    /**
     * @throws Exception
     */
    @Test
    public void testGetString() throws Exception {
        final ResourceBundle bundle = ResourceBundleUtil.getBundle("CLMessages");
        assertThat(bundle.getString("ECL0001"), is(notNullValue()));
    }

                }
            }
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    @Override
    public Optional<String> getString(URI relativeSource, Charset charset) {
        requireNonNull(charset, "charset is null");
        Optional<byte[]> data = getBytes(relativeSource);
        return data.map(bytes -> new String(bytes, charset));
    }

			for i, ca := range secret.CertChain {
				t := "Intermediate"
				if i == 0 {
					t = "Leaf"
				} else if i == len(secret.CertChain)-1 {
					t = "Root"
				}
				n := new(big.Int)
				n, _ = n.SetString(ca.SerialNumber, 10)
				fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%x\t%v\t%v\n",
					secret.Identity, t, secret.State, certNotExpired(ca), n, valueOrNA(ca.ExpirationTime), valueOrNA(ca.ValidFrom))
			}
		}
	}
	return w.Flush()