Returns the multiplicity of this group: how many occurrences it may have on the command line; {@code "0..1"} (optional) by default. A group can be mad

Returns the list of options configured for this command. @return an immutable list of options that this command recognizes.

Expands any {@linkplain CommandLine#isExpandAtFiles() @-files} in the specified command line arguments, then parses the arguments and returns a list o

Returns the type to convert the option or positional parameter to before {@linkplain #setValue(Object) setting} the value. This may be a container typ

Returns whether picocli should validate the rules of this group: for a mutually exclusive group this means that no more than one arguments in the grou

Check whether [s] is a hexadecimal it supports hexadecimal string that starts either or without "0x" https://stackoverflow.com/questions/2670639/why-a

Returns an instance of the specified class. @param cls the class of the object to return @param <K> the type of the object to return @return the insta

check if [cmd_name] exist

Sorts the specified array of Strings shortest-first and returns it.

Returns the color scheme to use when printing help. The default value is the {@linkplain picocli.CommandLine.Help#defaultColorScheme(CommandLine.Help.

Returns the class that the option or parameter value should be converted to when matched on the command line. This method is <em>not</em> safe for ann

Returns the {@code ArgGroupSpec} of the container {@code GroupMatchContainer} of this match.

Returns whether the current trace level is INFO or higher.

Prints the specified message if the current trace level is WARN or higher. @param msg the message to print; may use {@link String#format(String, Objec

run a program that does nothing, this function is only for testing return: created process

Returns the list of all options and positional parameters configured for this command. @return an immutable list of all options and positional paramet

Returns the options and positional parameters in this group; may be empty but not {@code null}.

Returns the {@code CommandSpec} model that this Help was constructed with. @since 3.9

Returns the longest {@linkplain #names() option name}.

Returns a map of the option names to option spec objects configured for this command. @return an immutable map of options that this command recognizes

Returns the list of positional parameters configured for this command. @return an immutable list of positional parameters that this command recognizes

Returns the separator between option name and param label. @return the separator between option name and param label

Returns the command this option or positional parameter belongs to. <p>Beware that it is possible to programmatically add an option or positional para

Returns whether this option is inherited from a parent command. @see Option#scope() @since 4.3.0

Returns {@code true} if {@link #getType()} is {@code boolean} or {@code java.lang.Boolean}.

check if engine is attached

Returns the list of {@code GroupMatch} instances: {@code ArgGroupSpec}s with a multiplicity greater than one may be matched multiple times.

Option and positional parameter value label renderer used for the synopsis line(s) and the option list. By default initialized to the result of {@link

TODO need to spltup the functions to help with readability

Sets the value of this argument to the specified value and returns the previous value. Delegates to the current {@link #setter()}.

Returns a read-only view of the subcommand map.

Returns the {@code ITypeInfo} that can be used both at compile time (by annotation processors) and at runtime. @since 4.0

Returns the fallback value for this option: the value that is assigned for options with an optional parameter (for example, {@code arity = "0..1"}) if

Returns a map with the subcommands {@linkplain #addSubcommand(String, Object) registered} on this instance. @return a map with the registered subcomma

Returns the parent command of this subcommand, or {@code null} if this is a top-level command.

Convenience method for subclasses that returns the specified result object if no exit code was set, or otherwise, if an exit code {@linkplain #andExit

Sets the ANSI style to use and resets the color scheme to the default. @deprecated use {@link CommandLine#setColorScheme(Help.ColorScheme)} and {@link

Returns the {@linkplain ArgGroupSpec argument groups} in this command. @return an immutable list of groups of options and positional parameters in thi

Returns the {@code ColorScheme} model that this Help was constructed with. @since 3.0

Returns a String that can be used as a help section heading. Embedded {@code %n} format specifiers will be converted to platform-specific line breaks.

Returns the default value for an option or positional parameter or {@code null}. The returned value is converted to the type of the option/positional

Returns the description key of this arg spec, used to get the description from a resource bundle. @see Option#descriptionKey() @see Parameters#descrip

Returns the {@code CommandLine} object for the (sub)command that could not be invoked. @return the {@code CommandLine} object for the (sub)command whe

Returns whether this option will prompt the user to enter a value on the command line. @see Parameters#interactive() @see Option#interactive()

Returns the fallback value for this Map option or positional parameter: the value that is put into the Map when only the key is specified for the opti

Returns a Text with all option styles applied to the specified option string. @param option the option string to apply the registered option styles to

Returns the ResourceBundle of the specified Messages object or {@code null} if the specified Messages object is {@code null}.

Returns the current number of rows of this {@code TextTable}. @return the current number of rows in this TextTable

Returns a regular expression to split option parameter values or {@code ""} if the value should not be split. @see Option#split()