errors

type ExprError struct {
	Kind string
	Err  error
}

type InvalidArgumentError struct {
	Expected interface{}
	Actual   interface{}
}

type InvalidStateError struct {
	Expected interface{}
	Actual   interface{}
}

type NotFoundError struct {
	Expected interface{}
}

type NotSupportedError struct {
	What   string
	Reason string
}

type RequirementExpectationError struct {
	Expected interface{}
	Actual   interface{}
}

type SubProcessError struct {
	Id     string
	Reason string
}

type TaskExecError struct {
	Id     string
	Reason string
}