Allow matching extracted XPath

[Rhobal]

I'm trying to verify content that has been rendered in XHTML.
I can do that by looking for an XPath that contains the content, e.g.

assertThat(xhtml, XhtmlMatchers.hasXPath("//ns1:div[@id='content'][text()='Somecontent']", NS1));

However, if the structure is right but the content is wrong, I'm just informed that the XPath was not found. It would be much more comfortable, if I could add matchers to check the xpath result:

assertThat(xhtml, XhtmlMatchers.hasXPath("//ns1:div[@id='content']/text()", NS1, equalTo("Somecontent"));

An error would then show that the content that is wrong.

[dmarkov]

@yegor256 dispatch this issue please, see par.21