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Java cloudControl API client

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package com.cloudcontrolled.api.client.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.Properties;

import org.apache.cxf.jaxrs.client.WebClient;

/**
 * 
 * Header class.
 * 
 * 
 * @author Denis Neuling ([email protected])
 * 
 */
public class Header {

	/** Constant PROPERTIESLOACTION="header.properties" */
	public static final String PROPERTIESLOACTION = "header.properties";

	private static Header INSTANCE;

	private Properties header = new Properties();

	private Header() {
	}

	/**
	 * 
	 * @return
	 */
	private Properties getHeader() {
		return header;
	}

	/**
	 * 
	 * @param properties
	 */
	private void setHeader(Properties properties) {
		header = properties;
	}

	/**
	 * 
	 * @throws IOException
	 */
	private void load() throws IOException {
		InputStream inputStream = ClassLoader.getSystemResourceAsStream(PROPERTIESLOACTION);
		Properties properties = new Properties();
		try {
			properties.load(inputStream);
		} catch (IOException ioe) {
			throw ioe;
		} finally {
			inputStream.close();
		}
		setHeader(properties);
	}

	/**
	 * 
	 * getInstance.
	 * 
	 * 
	 * @return a {@link com.cloudcontrolled.api.client.util.Header} object.
	 */
	public static Header getInstance() {
		if (INSTANCE == null) {
			INSTANCE = new Header();
			try {
				INSTANCE.load();
			} catch (Exception e) {
				INSTANCE.setHeader(new Properties());
			}
		}
		return INSTANCE;
	}

	/**
	 * 
	 * Setter for the field header.
	 * 
	 * 
	 * @param webClient
	 *            a {@link org.apache.cxf.jaxrs.client.WebClient} object.
	 * @return a {@link org.apache.cxf.jaxrs.client.WebClient} object.
	 */
	public static WebClient setHeader(WebClient webClient) {
		Properties properties = getInstance().getHeader();
		Enumeration