NewExpression creates a field expression from a slice of resolvers.

NewQueryResolver creates a field query resolver that returns the result of a query function.

Expression represents a Benthos dynamic field expression, used to configure string fields where the contents should change based on the contents of messages and other factors.

QueryResolver executes a query and returns a string representation of the result.

Message is an interface type to be given to a function interpolator, it allows the function to resolve fields and metadata from a message.

Resolver is an interface for resolving a string containing Bloblang function interpolations into either a string or bytes.

StaticResolver is a Resolver implementation that simply returns a static string.