docs: function getChildRsql (perhapsWrap, constraint) {
    const rsql = getRsqlFromConstraint(constraint)
    if (constraint.operands && constraint.operands.length === 1) {
      // Skip this node, render the only child node
      return getChildRsql(perhapsWrap, constraint.operands[0])
    }
    if (perhapsWrap && constraint.operator === 'OR') {
      if (constraint.operands.length > 1) {
        return `(${rsql})`
      }
    }
    return rsql
  }