HistoryInterface

class abjad.history.interface.HistoryInterface(_client)

Bases: abjad.core.interface._Interface

Completely empty namespace available for composer labelling.

abjad> t = Note(0, (1, 4))
abjad> t.history.previous_transform = 'foo'
abjad> t.history.previous_transform
'foo'

Abjad ignores HistoryInterface attributes and usage completely.

The HistoryInterface handles no LilyPond grob.

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