func MergeSchema(dst, src map[string]*schema.Schema) {
	for k, v := range src {
		if _, ok := dst[k]; ok {
			panic(fmt.Errorf("conflicting schema key: %s", k))
		}
		dst[k] = v
	}
}
func MergeSchema(dst, src map[string]*schema.Schema) {
	for k, v := range src {
		if _, ok := dst[k]; ok {
			panic(fmt.Errorf("conflicting schema key: %s", k))
		}
		dst[k] = v
	}
}
// MergeSchema merges the map[string]*schema.Schema from src into dst. Safety
// against conflicts is enforced by panicing.