Factory detection bug.

[sadeghjafari5528]

In the following example factory can not detected.
if we remove "implements Y" this can detect factory but if we keep it this algorithm can not detect factory pattern in this example.

example:

package com.products;
import com.functions.DecodedImage;

class X
{

}

interface Y
{

}

class GifReader extends X implements Y{
private DecodedImage decodedImage;

public GifReader(String image, int size) {
    this.decodedImage = new DecodedImage(image);
}

public DecodedImage getDecodeImage() {
    return decodedImage;
}

public int getEncodeImage() {
    return 0;
}

}