### Question:
Option implements Cloneable, Serializable { public String getValue() { return hasNoValues() ? null : values.get(0); } private  Option(final Builder builder);  Option(String opt, String description);  Option(String opt, boolean hasArg, String description);  Option(String opt, String longOpt, boolean hasArg, String description); int getId(); String getOpt(); Object getType(); @Deprecated void setType(Object type); void setType(Class<?> type); String getLongOpt(); void setLongOpt(String longOpt); void setOptionalArg(boolean optionalArg); boolean hasOptionalArg(); boolean hasLongOpt(); boolean hasArg(); String getDescription(); void setDescription(String description); boolean isRequired(); void setRequired(boolean required); void setArgName(String argName); String getArgName(); boolean hasArgName(); boolean hasArgs(); void setArgs(int num); void setValueSeparator(char sep); char getValueSeparator(); boolean hasValueSeparator(); int getArgs(); String getValue(); String getValue(int index); String getValue(String defaultValue); String[] getValues(); List<String> getValuesList(); @Override String toString(); @Override boolean equals(Object o); @Override int hashCode(); @Override Object clone(); @Deprecated boolean addValue(String value); static Builder builder(); static Builder builder(final String opt); static final int UNINITIALIZED; static final int UNLIMITED_VALUES; }### Answer:
@Test public void testGetValue() { Option option = new Option("f", null); option.setArgs(Option.UNLIMITED_VALUES); assertEquals("default", option.getValue("default")); assertEquals(null, option.getValue(0)); option.addValueForProcessing("foo"); assertEquals("foo", option.getValue()); assertEquals("foo", option.getValue(0)); assertEquals("foo", option.getValue("default")); }