Suggest the alternative of following class of activiti 6.0.0

[jkanjariya]

Hi,

Following class available in activiti 6.0.0 but not in activiti 7.0.0.SR1.

org.activiti.engine.impl.el.Expression
org.activiti.engine.FormService
org.activiti.engine.form.FormProperty
org.activiti.engine.form.TaskFormData
org.activiti.engine.impl.form.EnumFormType

Can you suggest how we can find alternative of this class for this functionality.