old_contents: """
  Harvester of pubmed for the SHARE notification service
  """
  
  
  from __future__ import unicode_literals
  
  from scrapi.base import schemas
  from scrapi.base import helpers
  from scrapi.base import OAIHarvester
  
  
  def oai_extract_url_pubmed(identifiers):
      identifiers = [identifiers] if not isinstance(identifiers, list) else identifiers
      for item in identifiers:
          try:
              found_url = helpers.URL_REGEX.search(item).group()
              if 'viewcontent' not in found_url and '/pubmed/' in found_url:
                  return found_url.decode('utf-8')
          except AttributeError:
              continue
  
  
  class PubMedHarvester(OAIHarvester):
      short_name = 'pubmedcentral'
      long_name = 'PubMed Central'
      url = 'http://www.ncbi.nlm.nih.gov/pmc/'
  
      schema = helpers.updated_schema(
          schemas.OAISCHEMA,
          {
              "uris": {
                  "canonicalUri": ('//dc:identifier/node()', oai_extract_url_pubmed)
              }
          }
      )
  
      base_url = 'http://www.pubmedcentral.nih.gov/oai/oai.cgi'
      property_list = [
          'type', 'source', 'publisher', 'rights',
          'format', 'setSpec', 'date', 'identifier'
      ]
  
new_contents: """
  Harvester of PubMed Central for the SHARE notification service
  
  Example API call: http://www.pubmedcentral.nih.gov/oai/oai.cgi?verb=ListRecords&metadataPrefix=oai_dc&from=2015-04-13&until=2015-04-14
  """
  
  
  from __future__ import unicode_literals
  
  from scrapi.base import schemas
  from scrapi.base import helpers
  from scrapi.base import OAIHarvester
  
  
  def oai_extract_url_pubmed(identifiers):
      identifiers = [identifiers] if not isinstance(identifiers, list) else identifiers
      for item in identifiers:
          try:
              found_url = helpers.URL_REGEX.search(item).group()
              if 'viewcontent' not in found_url and '/pubmed/' in found_url:
                  return found_url.decode('utf-8')
          except AttributeError:
              continue
  
  
  class PubMedHarvester(OAIHarvester):
      short_name = 'pubmedcentral'
      long_name = 'PubMed Central'
      url = 'http://www.ncbi.nlm.nih.gov/pmc/'
  
      schema = helpers.updated_schema(
          schemas.OAISCHEMA,
          {
              "uris": {
                  "canonicalUri": ('//dc:identifier/node()', oai_extract_url_pubmed)
              }
          }
      )
  
      base_url = 'http://www.pubmedcentral.nih.gov/oai/oai.cgi'
      property_list = [
          'type', 'source', 'publisher', 'rights',
          'format', 'setSpec', 'date', 'identifier'
      ]
  
subject: Add API call to top docstring