RecordingDisposition.zero
  RecordingDisposition.zero constructor
use this ctor to as the initial value when building a StreamBuilder
Implementation
RecordingDisposition.zero()
    : duration = Duration(seconds: 0),
      decibels = 0;use this ctor to as the initial value when building a StreamBuilder
RecordingDisposition.zero()
    : duration = Duration(seconds: 0),
      decibels = 0;