How to use

setAllowSameVariance

method

in

cc.redberry.core.parser.Parser

/**
 * Allows to parse expressions with repeated indices of the same variance (like T_aa or T_a*T^a which results in T^a_a
 * and T^a*T_a respactively)
 *
 * @param b allow or not to parse repeated indices with same variance
 */
public void setParserAllowsSameVariance(boolean b) {
  parseManager.getParser().setAllowSameVariance(b);
}