Get a map from state to alt subset from a configuration set. For each configuration {@code c} in {@code configs}:
<pre> map[c.{@link ATNConfig#state state}] U= c.{@link ATNConfig#alt alt} </pre>
See Implementation
Get a map from state to alt subset from a configuration set. For each configuration {@code c} in {@code configs}:
<pre> map[c.{@link ATNConfig#state state}] U= c.{@link ATNConfig#alt alt} </pre>