private String getBetaAromaticType(String symb, boolean imidazolium, boolean anion) {
        return getAromaticType(betaTypes, 'B', symb, imidazolium, anion);
    }
private String getBetaAromaticType ( String symb , boolean imidazolium , boolean anion ) { return getAromaticType ( betaTypes , 'B' , symb , imidazolium , anion ) ; }
Convenience method to obtain the aromatic type of a symbolic (SYMB) type in the beta position
of a 5-member ring. This method delegates to {@link #getAromaticType(java.util.Map, char,
String, boolean, boolean)} setup for beta atoms.

@param symb        symbolic atom type
@param imidazolium imidazolium flag (IM naming from MMFFAROM.PAR)
@param anion       anion flag (AN naming from MMFFAROM.PAR)
@return the aromatic type