code: public static Class<? extends Schema> getSchema(String name) {
      Class<? extends Schema> clz = schemas.get(name);
      if (clz == null)
        throw new H2ONotFoundArgumentException("Failed to find schema for schema_name: " + name,
            "Failed to find schema for schema_name: " + name + "\n" +
            "Did you forget to add an entry into META-INF/services/water.api.Schema?");
      return clz;
    }
docs: Lookup schema by name.
  @throws H2ONotFoundArgumentException if an appropriate schema is not found