:   self ?''subcommand''?

manual page: http://www.tcl.tk/man/tcl8.6/TclCmd/self.htm

Provides introspection about the currently executing [TclOO] method. If ''subcommand'' is omitted, returns the current name of the object (respecting any [rename]s of it), just as in [self object]. See http://www.tcl.tk/man/tcl8.6/TclCmd/self.htm for details. Supported subcommands are:

    :   [self call]
    :   [self caller]
    :   [self class]
    :   [self filter]
    :   [self method]
    :   [self namespace]
    :   [self next]
    :   [self object]
    :   [self target]