Comments on "No self-advantage in recognizing photographs of one's own hand" (Holmes, Spence, Rossetti Exp Brain Res., 2022). What exactly is meant by "self-advantage effect" in implicit recognition of one's hand?

What exactly is meant by "self-advantage effect" in implicit recognition of one's hand? Comments on "No self-advantage in recognizing photographs of one's own hand" (Holmes, Spence, Rossetti Exp Brain Res., 2022). The title is deceptive even when considering the results of the meta-analysis, conducted by the authors: they conclude that "Overall, there is some evidence of a self-advantage effect for implicit tasks only, but this is complicated by an apparent bias for those effects to be published" (Pag.9). [Extracted from the article]