fieldToAlias map[string]string,
saTypeMap map[string]enumspb.IndexedValueType,
aliasToField := make(map[string]string, len(fieldToAlias))
for field, alias := range fieldToAlias {
aliasToField[alias] = field
}
aliasToField: aliasToField,
fieldToAlias: fieldToAlias,
saTypeMap: saTypeMap,
}
}