class_docstr: Base class for simple domains, e.g. ZZ, QQ. 
class_docstr_tok: ["Base","class","for","simple","domains",",","e.g",".","ZZ",",","QQ","."]
docstr: Inject generators into this domain. 
docstr_tok: ["Inject","generators","into","this","domain","."]
code: def inject(self, *gens):
      """Inject generators into this domain."""
      return self.poly_ring(*gens)
  
imports: from sympy.polys.domains.domain import Domain
  from sympy.utilities import public
label_desc: Use image node_id 1 for calling the SimpleDomain obj's underlying member method code with example usage: obj.inject() and returns: self