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