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Added return statement to add methods to use them as chain method. #1662

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Added return statement to add methods to use them as chain method. #1662

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15 changes: 9 additions & 6 deletions src/System.CommandLine/Command.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -78,31 +78,34 @@ internal IReadOnlyList<ValidateSymbolResult<CommandResult>> Validators
/// Adds an <see cref="Argument"/> to the command.
/// </summary>
/// <param name="argument">The argument to add to the command.</param>
public void AddArgument(Argument argument)
public Command AddArgument(Argument argument)
{
argument.AddParent(this);
(_arguments ??= new()).Add(argument);
return this;
}

/// <summary>
/// Adds a subcommand to the command.
/// </summary>
/// <param name="command">The subcommand to add to the command.</param>
/// <remarks>Commands can be nested to an arbitrary depth.</remarks>
public void AddCommand(Command command)
public Command AddCommand(Command command)
{
command.AddParent(this);
(_subcommands ??= new()).Add(command);
return this;
}

/// <summary>
/// Adds an <see cref="Option"/> to the command.
/// </summary>
/// <param name="option">The option to add to the command.</param>
public void AddOption(Option option)
public Command AddOption(Option option)
{
option.AddParent(this);
(_options ??= new()).Add(option);
return this;
}

/// <summary>
Expand All @@ -120,20 +123,20 @@ public void AddGlobalOption(Option option)
/// Adds an <see cref="Option"/> to the command.
/// </summary>
/// <param name="option">The option to add to the command.</param>
public void Add(Option option) => AddOption(option);
public Command Add(Option option) => AddOption(option);

/// <summary>
/// Adds an <see cref="Argument"/> to the command.
/// </summary>
/// <param name="argument">The argument to add to the command.</param>
public void Add(Argument argument) => AddArgument(argument);
public Command Add(Argument argument) => AddArgument(argument);

/// <summary>
/// Adds a subcommand to the command.
/// </summary>
/// <param name="command">The subcommand to add to the command.</param>
/// <remarks>Commands can be nested to an arbitrary depth.</remarks>
public void Add(Command command) => AddCommand(command);
public Command Add(Command command) => AddCommand(command);

private protected override string DefaultName => throw new NotImplementedException();

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