func (p GetHistogramParams) WithDelta(delta bool) *GetHistogramParams {
	p.Delta = delta
	return &p
}
func (p GetHistogramParams) WithDelta(delta bool) *GetHistogramParams {
	p.Delta = delta
	return &p
}
func ( p GetHistogramParams ) WithDelta ( delta bool ) * GetHistogramParams { p . Delta = delta return & p }
// WithDelta if true, retrieve delta since last call.
WithDelta if true retrieve delta since last call .