code: private String getAlphaAromaticType(String symb, boolean imidazolium, boolean anion) {
          return getAromaticType(alphaTypes, 'A', symb, imidazolium, anion);
      }
docs: Convenience method to obtain the aromatic type of a symbolic (SYMB) type in the alpha
  position of a 5-member ring. This method delegates to {@link #getAromaticType(java.util.Map,
  char, String, boolean, boolean)} setup for alpha 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