Creating a Connector for a RESTful API using @RestCall Annotations

package com.fb;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Generated;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.codehaus.jackson.annotate.JsonAnyGetter;
import org.codehaus.jackson.annotate.JsonAnySetter;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.annotate.JsonPropertyOrder;
import org.codehaus.jackson.map.annotate.JsonSerialize;
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
@Generated("com.googlecode.jsonschema2pojo")
@JsonPropertyOrder({
    "id",
    "name",
    "first_name",
    "last_name",
    "link",
    "username",
    "gender",
    "locale"
})
public class User {
    /**
     * User ID
     *
     */
    @JsonProperty("id")
    private String id;
    /**
     * User name
     *
     */
    @JsonProperty("name")
    private String name;
    /**
     * User first name
     *
     */
    @JsonProperty("first_name")
    private String first_name;
    /**
     * User last name
     *
     */
    @JsonProperty("last_name")
    private String last_name;
    /**
     * Link
     *
     */
    @JsonProperty("link")
    private String link;
    /**
     * Username
     *
     */
    @JsonProperty("username")
    private String username;
    /**
     * Gender
     *
     */
    @JsonProperty("gender")
    private String gender;
    /**
     * Locale
     *
     */
    @JsonProperty("locale")
    private String locale;
    private Map<String, Object> additionalProperties = new HashMap<String, Object>();
    /**
     * Get user ID
     *
     */
    @JsonProperty("id")
    public String getId() {
        return id;
    }
    /**
     * Set user ID
     *
     */
    @JsonProperty("id")
    public void setId(String id) {
        this.id = id;
    }
    /**
     * Get user name
     *
     */
    @JsonProperty("name")
    public String getName() {
        return name;
    }
    /**
     * Set user name
     *
     */
    @JsonProperty("name")
    public void setName(String name) {
        this.name = name;
    }
    /**
     * Get user first name
     *
     */
    @JsonProperty("first_name")
    public String getFirst_name() {
        return first_name;
    }
    /**
     * Set user first name
     *
     */
    @JsonProperty("first_name")
    public void setFirst_name(String first_name) {
        this.first_name = first_name;
    }
    /**
     * Get user last name
     *
     */
    @JsonProperty("last_name")
    public String getLast_name() {
        return last_name;
    }
    /**
     * Set user last name
     *
     */
    @JsonProperty("last_name")
    public void setLast_name(String last_name) {
        this.last_name = last_name;
    }
    /**
     * Get the link
     *
     */
    @JsonProperty("link")
    public String getLink() {
        return link;
    }
    /**
     * Set the link
     *
     */
    @JsonProperty("link")
    public void setLink(String link) {
        this.link = link;
    }
    /**
     * Get the username
     *
     */
    @JsonProperty("username")
    public String getUsername() {
        return username;
    }
    /**
     * Set the username
     *
     */
    @JsonProperty("username")
    public void setUsername(String username) {
        this.username = username;
    }
    /**
     * Get user gender
     *
     */
    @JsonProperty("gender")
    public String getGender() {
        return gender;
    }
    /**
     * Set user gender
     *
     */
    @JsonProperty("gender")
    public void setGender(String gender) {
        this.gender = gender;
    }
    /**
     * Get the locale
     *
     */
    @JsonProperty("locale")
    public String getLocale() {
        return locale;
    }
    /**
     * Set the locale
     *
     */
    @JsonProperty("locale")
    public void setLocale(String locale) {
        this.locale = locale;
    }
    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this);
    }
    @Override
    public int hashCode() {
        return HashCodeBuilder.reflectionHashCode(this);
    }
    @Override
    public boolean equals(Object other) {
        return EqualsBuilder.reflectionEquals(this, other);
    }
    @JsonAnyGetter
    public Map<String, Object> getAdditionalProperties() {
        return this.additionalProperties;
    }
    @JsonAnySetter
    public void setAdditionalProperties(String name, Object value) {
        this.additionalProperties.put(name, value);
    }
}

/**
 * GET a user profile.
 * {@sample.xml ../../../examples/Facebook.default.xml.sample facebook-connector:default}
 *
 * @param user
 * Represents the ID of the user object.
 * @param metadata
 * The Graph API supports introspection of objects, which lets
 * you see all of the connections an object has without knowing
 * its type ahead of time.
 * @return  a User object.
 * @throws IOException
 * when the call fails
 */
@Processor
@RestCall(uri = "https://graph.facebook.com/{user}", method = HttpMethod.GET)
public abstract User getUser(
    @RestUriParam("user") String user,
    @RestQueryParam("metadata") String metadata)
    throws IOException;
/**
 * Post a message on a user's wall
 * {@sample.xml ../../../examples/Facebook.default.xml.sample facebook-connector:default}
 *
 * @param message
 * Message to be published
 * @param user
 * User ID
 * @return  No return information available
 * @throws IOException
 * when the call fails
 */

@OAuthProtected
@Processor
@RestCall(uri = "https://graph.facebook.com/{user}/feed", method = HttpMethod.POST, contentType = "application/json")
public abstract String publishWall(
    @RestUriParam("user") String user,
    @RestPostParam("message") String message)
    throws IOException;