add_attribute(attribute)
Instance Public methods
Adds attribute
if not already there. If it is (as method(s) or
attribute), updates the comment if it was empty.
The attribute is registered only if it defines a new method. For instance,
attr_reader :foo
will not be registered if method
foo
exists, but attr_accessor :foo
will be
registered if method foo
exists, but foo=
does
not.
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