code: func fmtIndexName(ixName string, tableName string) string {
  	// chop off _ix, _idx, _index, _pkey, or _key
  	m := IndexChopSuffixRE.FindStringIndex(ixName)
  	if m != nil {
  		ixName = ixName[:m[0]]
  	}
  
  	// check tableName
  	if ixName == tableName {
  		return ""
  	}
  
  	// chop off tablename_
  	if strings.HasPrefix(ixName, tableName+"_") {
  		ixName = ixName[len(tableName)+1:]
  	}
  
  	// camel case name
  	return snaker.SnakeToCamelIdentifier(ixName)
  }
docs: // fmtIndexName formats the index name.