message: fix(ifc parser): replace empty children arrays with elements
diff: @@ -57,7 +57,7 @@ module.exports = class IFCParser {
  type: 'IFCPROJECT',
  // eslint-disable-next-line camelcase
  speckle_type: 'Base',
  - children: []
  + elements: []
  }
  await this.populateSpatialNode(project, chunks, [], 0)
  @@ -287,7 +287,7 @@ module.exports = class IFCParser {
  speckle_type: typeName,
  expressID: id,
  type: typeName,
  - children: [],
  + elements: [],
  properties: null
  }
  }
  