GetBlockRangeFromArg returns the block range from the given argument or the range [HEAD, +∞] if the argument is empty.

GetBlockRangeFromArgDefault returns a block range from a string argument, using the default block range `defaultRange` if the input is empty.

GetBlockRangeFromFlag returns the block range from the given flag name or the range [HEAD, +∞] if the flag is not set.

GetBlockRangeFromFlagDefault returns a block range from a flag, using the default block range `defaultRange` if the flag is not set at all.

Deprecated: use ParseBlockRangeDefault instead and provide the default range when the input is empty.

ParseBlockRangeDefault parses a block range from a string, using the default block range `defaultRange` if the input is empty.

ParseRangeBoundary attempts to convert a string to a RangeBoundary.

RangeBoundaryNames returns a list of possible string values of RangeBoundary.

RangeBoundaryExclusive is a RangeBoundary of type Exclusive.

RangeBoundaryInclusive is a RangeBoundary of type Inclusive.

BlockRange is actually an UnresolvedBlockRange so both the start and end could be negative values.

ENUM( Inclusive Exclusive ).