func Lookup(name string) *Profile// Lookup returns the profile with the given name,// or nil if no such profile exists.func (p *Profile) WriteTo(w io.Writer,debug int) error// WriteTo writes a pprof-formatted snapshot of the profile to w.// If a write to w returns an error,WriteTo returns that error.// Otherwise,WriteTo returns nil.9 x' T* H! y3 K- L4 s* Y