code: def set_statements_pmid(self, pmid):
          
          # Replace PMID value in JSON dict first
          for stmt in self.json_stmts:
              evs = stmt.get('evidence', [])
              for ev in evs:
                  ev['pmid'] = pmid
          # Replace PMID value in extracted Statements next
          for stmt in self.statements:
              for ev in stmt.evidence:
                  ev.pmid = pmid
docs: Set the evidence PMID of Statements that have been extracted.
  
          Parameters
          ----------
          pmid : str or None
              The PMID to be used in the Evidence objects of the Statements
              that were extracted by the processor.