price = "service.metadata.base.price"
license = "service.metadata.base.license"
sample = "service.metadata.base.links.type"
categories = "service.metadata.base.categories"
tags = "service.metadata.base.tags"
created = "created"
updated_frequency = "service.metadata.additionalInformation.updateFrequency"
service_type = "service.type"

list_indexes = [price, license, sample, categories, tags, created, updated_frequency, service_type]
