made method idempotent
made method idempotent

webmozart/assetic,sportradar/assetic,Sgoettschkes/assetic,renaatdemuynck/assetic,matthiasmullie/assetic,Sgoettschkes/assetic,shandy05/assetic,webmozart/assetic,renaatdemuynck/assetic,lellimecnar/assetic,shandy05/assetic,fredemmott/assetic,Sgoettschkes/assetic,lenar/assetic,lenar/assetic,sportradar/assetic,lellimecnar/assetic,mubassirhayat/assetic,lenar/assetic,renaatdemuynck/assetic,lellimecnar/assetic,lellimecnar/assetic,matthiasmullie/assetic,lenar/assetic,shandy05/assetic,fredemmott/assetic,renaatdemuynck/assetic,kriswallsmith/assetic,kriswallsmith/assetic,fredemmott/assetic,matthiasmullie/assetic,kriswallsmith/assetic,matthiasmullie/assetic,sportradar/assetic,mubassirhayat/assetic,stof/assetic,stof/assetic,shandy05/assetic,Sgoettschkes/assetic,webmozart/assetic,mubassirhayat/assetic,kriswallsmith/assetic