Combine the current expression with the given expression using the intersection operator (AND).
@param expr Expression to combine with.
@return Expression
Combine the current expression with the given expression using the intersection operator (AND).
@param expr Expression to combine with.
@param param Value to substitute.
@param
Combine the current expression with the given expression using the union operator (OR).
@param expr Expression to combine with.
@param param Value to substitute.
@param