Builds a request which returns all customers for defined period. Returned dataset containes all the customer counts records for the given time period... ...and estimated values for boundary dates, if they don't exist in DB

'Declaration
 
Public Function New( _
   ByVal periodBegin As Date, _
   ByVal periodEnd As Date _
)

'Usage
 
Dim periodBegin As Date
Dim periodEnd As Date
 
Dim instance As New FindCustomerCountsForTimePeriodRequest(periodBegin, periodEnd)

public FindCustomerCountsForTimePeriodRequest( 
   DateTime periodBegin,
   DateTime periodEnd
)