@return the character that marks the the ending of a delimited node, must not clash with any built-in special characters. Note that for a symmetric delimiter such as "*", this is the same as the opening.
Determine how many (if any) of the delimiter characters should be used. <p> This allows implementations to decide how many characters to use based on the properties of the delimiter runs. An implementation can also return 0 when it doesn't want to allow this particular combination of delimiter runs.
Minimum number of delimiter characters that are needed to activate this. Must be at least 1.
@return the character that marks the beginning of a delimited node, must not clash with any built-in special characters
Process the matched delimiters, e.g. by wrapping the nodes between opener and closer in a new node, or appending a new node after the opener. <p> Note that removal of the delimiter from the delimiter nodes and unlinking them is done by the caller.
Custom delimiter processor for additional delimiters besides {@code _} and {@code *}. <p> Note that implementations of this need to be thread-safe, the same instance may be used by multiple parsers.