code: function unsetProperty ({bunsenId, formValue, value}) {
    const valueChangeSet = new Map()
  
    valueChangeSet.set(bunsenId, {
      value,
      type: 'unset'
    })
  
    return {
      value: unset(formValue, bunsenId),
      valueChangeSet
    }
  }
docs: Unset a specific property in the form
  @param {String} bunsenId - path to property to unset
  @param {Object} formValue - current form value
  @param {*} value - property value that triggered unset
  @returns {Object} object containing new form value and changeset