%% LaTeX2e file `tmp-gen-using-a-library-method.tex'
%% generated by the `filecontents' environment
%% from source `codeanatomy.lstlisting' on 2025/10/19.
%%
\begin{tikzpicture}[remember picture]
\codeBlock{%
  \iPart{r}{double} d = \iPart{l}{Math}.\iPart{m}{sqrt}(\iPart{a}{b*b - 4.0*a*c)};
}
% Annotation
\codeAnnotation{lText}   (2, 1.125) {library name}
\codeAnnotation{mText} (4.5, 1.125) {method name}
\codeAnnotation{rText}   (2,-0.7)   {return type}
\codeAnnotation{aText}   (4,-0.7)   {argument}
% Arrows
\draw[->,annotation] (lText) -- (l);
\draw[->,annotation] (mText) -- (m);
\draw[->,annotation] (rText.north west) -- (r);
\draw[->,annotation] (aText.north east) -- (a);
\end{tikzpicture}