Function isNumeric

c++/src/SchemaEvolution.cc:53–57

  };

  bool isNumeric(const Type& type) {
    auto kind = type.getKind();
    return kind == BOOLEAN || kind == BYTE || kind == SHORT || kind == INT || kind == LONG ||
           kind == FLOAT || kind == DOUBLE;
  }

  bool isStringVariant(const Type& type) {
    auto kind = type.getKind();