*iterateFunctionExpression(node, groupName) {
    if (node.body.type === 'BlockStatement') {
      for (const item of node.body.body) {
        if (
          item.type === 'ReturnStatement' &&
          item.argument &&
          item.argument.type === 'ObjectExpression'
        ) {
          yield* this.iterateObjectExpression(item.argument, groupName)
        }
      }
    }
  }
Return generator with all elements inside FunctionExpression
@param {FunctionExpression} node Node to check
@param {GroupName} groupName Name of parent group
@returns {IterableIterator<ComponentObjectPropertyData>}