code: def set_metadata(self, metadata):
      self.metadata = metadata
  
file_path: TimeSide/timeside/core/aubio_encoder.py
imports: import aubio
  import numpy
  from timeside.core import Processor, implements, interfacedoc, abstract
  from timeside.core.api import IEncoder
label_desc: Use image node_id 4 for calling the AubioEncoder obj's underlying member method code with example usage: obj.set_metadata(metadata) without return types