--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: The start time of the period in UTC as a DateTime. May be nil if unbounded.
full_name: TZInfo::TimezonePeriod#utc_start
is_singleton: false
name: utc_start
params: ()
visibility: public
