public static ArrayBuilder<Schema> array() {
    return builder().array();
  }
@Test
  void array() {
    Schema longSchema = Schema.create(Schema.Type.LONG);
    Schema expected = Schema.createArray(longSchema);

    Schema schema1 = SchemaBuilder.array().items().longType();
    assertEquals(expected, schema1);

    Schema schema2 = SchemaBuilder.array().items(longSchema);
    assertEquals(expected, schema2);

    Schema schema3 = SchemaBuilder.array().prop("p", "v").items().type("long");
    expected.addProp("p", "v");
    assertEquals(expected, schema3);
  }