jodd-decora/src/main/java/jodd/decora/DecoraRequestWrapper.java
@Override
	public String getHeader(final String header) {
		if (isExcluded(header)) {
			return null;
		}
		return super.getHeader(header);
	}
@Override
	public String getHeader(final String header) {
		if (isExcluded(header)) {
			return null;
		}
		return super.getHeader(header);
	}
Returns <code>null</code> for excluded HTTP headers.