text: """Resolwe descriptor schema model."""
  from django.contrib.postgres.fields import JSONField
  from django.db import models
  
  from .base import BaseModel
  
  
  class DescriptorSchema(BaseModel):
      """Postgres model for storing descriptors."""
  
      class Meta(BaseModel.Meta):
          """DescriptorSchema Meta options."""
  
          permissions = (
              ("view_descriptorschema", "Can view descriptor schema"),
              ("edit_descriptorschema", "Can edit descriptor schema"),
              ("share_descriptorschema", "Can share descriptor schema"),
              ("owner_descriptorschema", "Is owner of the description schema"),
          )
  
      #: detailed description
      description = models.TextField(blank=True)
  
      #: user descriptor schema represented as a JSON object
      schema = JSONField(default=list)
  