* close or flush either object.
   *
   * @param from the object to read from
   * @param to the object to write to
   * @return the number of characters copied
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue
  public static long copy(Readable from, Appendable to) throws IOException {

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is(sameClass(Integer.class)));

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is(sameClass(Number.class)));

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is(sameClass(Object.class)));

        assertThat(it.hasNext(), is(not(true)));
    }

    /**
     * @throws Exception

                            "title": "Description",
                        },
                        "price": {"type": "number", "title": "Price"},
                        "tax": {
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                            "title": "Tax",
                        },
                    },
                    "type": "object",

                        },
                        "price": {
                            "type": "number",
                            "title": "Price",
                            "examples": [35.4],
                        },
                        "tax": {
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                            "title": "Tax",
                            "examples": [3.2],

            type: integer
            minimum: 0
            exclusiveMinimum: false
            default: 0
            example: 0
        - name: num
          in: query
          description: The number of returned documents as a search result
          required: false
          schema:
            type: integer
            minimum: 0
            exclusiveMinimum: false
            maximum: 100

                        "price": {"title": "Price", "type": "number"},
                        "description": {
                            "title": "Description",
                            "anyOf": [{"type": "string"}, {"type": "null"}],
                        },
                        "tax": {
                            "title": "Tax",
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                        },

                        },
                        "price": {"title": "Price", "type": "number"},
                        "tax": {
                            "title": "Tax",
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                        },
                    },
                },
                "User": {

                        },
                        "price": {"title": "Price", "type": "number"},
                        "tax": {
                            "title": "Tax",
                            "anyOf": [{"type": "number"}, {"type": "null"}],
                        },
                    },
                },
                "ValidationError": {

        }
        return null;
    }

    /**
     * Returns a {@link ConstructorDesc} that matches the given arguments.
     * <p>
     * If the parameter type is a number, it is considered a match if the argument can be converted to the number type.
     * </p>
     *
     * @param args
     *            the constructor arguments

     * @return number of bytes written
     */
    protected abstract int writeBytesWireFormat(byte[] dst, int dstIndex);

    /**
     * Reads the message body from the wire format.
     *
     * @param buffer the buffer to read from
     * @param bufferIndex the starting position in the buffer
     * @return number of bytes read