hunk.code_window: 	}
   	if s.EmailAddress == nil {
   		s.EmailAddress = NewString("")
   	}
   }
   type MessageExportSettings struct {
   	EnableExport        *bool
  
hunk.labels: keep keep keep add keep keep keep keep
hunk.after_edit: 	if s.SMTPServerTimeout == nil || *s.SMTPServerTimeout == 0 {
   		s.SMTPServerTimeout = NewInt(1800)
   	}
  
hunk.file_path: model/config.go
hunk.type: add
file: // Copyright 2018 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // Package detrand provides deterministically random functionality.
  //
  // The pseudo-randomness of these functions is seeded by the program binary
  // itself and guarantees that the output does not change within a program,
  // while ensuring that the output is unstable across different builds.
  package detrand
  
  import (
  	"encoding/binary"
  	"hash/fnv"
  	"os"
  )
  
  // Disable disables detrand such that all functions returns the zero value.
  // This function is not concurrent-safe and must be called during program init.
  func Disable() {
  	randSeed = 0
  }
  
  // Bool returns a deterministically random boolean.
  func Bool() bool {
  	return randSeed%2 == 1
  }
  
  // randSeed is a best-effort at an approximate hash of the Go binary.
  var randSeed = binaryHash()
  
  func binaryHash() uint64 {
  	// Open the Go binary.
  	s, err := os.Executable()
  	if err != nil {
  		return 0
  	}
  	f, err := os.Open(s)
  	if err != nil {
  		return 0
  	}
  	defer f.Close()
  
  	// Hash the size and several samples of the Go binary.
  	const numSamples = 8
  	var buf [64]byte
  	h := fnv.New64()
  	fi, err := f.Stat()
  	if err != nil {
  		return 0
  	}
  	binary.LittleEndian.PutUint64(buf[:8], uint64(fi.Size()))
  	h.Write(buf[:8])
  	for i := int64(0); i < numSamples; i++ {
  		if _, err := f.ReadAt(buf[:], i*fi.Size()/numSamples); err != nil {
  			return 0
  		}
  		h.Write(buf[:])
  	}
  	return h.Sum64()
  }
  