upperBoundary method
      
SdbBoundary<(I1, I2, I3)> 
upperBoundary(
    
- I1 value1,
- I2 value2,
- I3 value3, {
- bool? include = false,
Upper boundary
Implementation
SdbBoundary<(I1, I2, I3)> upperBoundary(
  I1 value1,
  I2 value2,
  I3 value3, {
  bool? include = false,
}) => SdbUpperBoundary((value1, value2, value3), include: include);